[tip:x86/extable] x86, extable: Use .pushsection ... .popsection for _ASM_EXTABLE()
From: tip-bot for H. Peter Anvin
Date: Fri Apr 20 2012 - 17:55:50 EST
Commit-ID: d4541805e812abb5110d5de83246488fa0aa9a8e
Gitweb: http://git.kernel.org/tip/d4541805e812abb5110d5de83246488fa0aa9a8e
Author: H. Peter Anvin <hpa@xxxxxxxxx>
AuthorDate: Fri, 20 Apr 2012 12:12:27 -0700
Committer: H. Peter Anvin <hpa@xxxxxxxxx>
CommitDate: Fri, 20 Apr 2012 13:51:38 -0700
x86, extable: Use .pushsection ... .popsection for _ASM_EXTABLE()
Instead of using .section ... .previous, use .pushsection
... .popsection; this is (hopefully) a bit more robust, especially in
complex assembly code.
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: David Daney <david.daney@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/CA%2B55aFyijf43qSu3N9nWHEBwaGbb7T2Oq9A=9EyR=Jtyqfq_cQ@xxxxxxxxxxxxxx
---
arch/x86/include/asm/asm.h | 20 ++++++++++----------
1 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
index 9412d65..ff3f6bf 100644
--- a/arch/x86/include/asm/asm.h
+++ b/arch/x86/include/asm/asm.h
@@ -42,17 +42,17 @@
/* Exception table entry */
#ifdef __ASSEMBLY__
-# define _ASM_EXTABLE(from,to) \
- __ASM_EX_SEC ; \
- _ASM_ALIGN ; \
- _ASM_PTR from , to ; \
- .previous
+# define _ASM_EXTABLE(from,to) \
+ .pushsection "__ex_table","a" ; \
+ _ASM_ALIGN ; \
+ _ASM_PTR from , to ; \
+ .popsection
#else
-# define _ASM_EXTABLE(from,to) \
- __ASM_EX_SEC \
- _ASM_ALIGN "\n" \
- _ASM_PTR #from "," #to "\n" \
- " .previous\n"
+# define _ASM_EXTABLE(from,to) \
+ " .pushsection \"__ex_table\",\"a\"\n" \
+ _ASM_ALIGN "\n" \
+ _ASM_PTR #from "," #to "\n" \
+ " .popsection\n"
#endif
#endif /* _ASM_X86_ASM_H */
--
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